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July 17, 1962
F. ALTMAN, JR
3,044,233
HANDLING OF FLEXIBLE PLASTIC BAGS
Filed Oct. 9, 1961
2 Sheets-Sheet 1
1-70.?
N
FM N K. A InmmmmRm
ATTORNEYS
July 17, 1962
F. ALTMAN, JR
3,044,233
HANDLING OF FLEXIBLE PLASTIC BAGS
Filed Oct. 9, 1961
2 Sheets-Sheet 2
29
INVENTOR.
ANK AL‘I'MAN JR.
BY
?M_m,>€m/q
ATTORNEYS
United States Parem
1C6
1
-
3,344,233
Patented July 17, 1962
2
FIG. 7 is a fragmentary plan view of the machine
3,044,233
HANDLING OF FLEXIBLE PLASTIC BAGS
Frank Altman, Jr., Dearhorn, Mich, assignor to Fabricon
Products, Division of The Eagle-Picker Company,
River Rouge, Mich., a corporation of Ohio
Filed Oct. 9, 1961, Ser. No. 143,952
shown in FIG. 6.
_
FIG. 8 is an exploded perspective view showing the
relative positions of the package and stop member used in
the machine.
_
FIG. 9 is a side elevation of a modi?ed ‘form of pack
age.
16 Claims. (Cl. 53-385)
Referring to FIGS. 1-3, novel package 10‘ embodying
This invention relates to the handling of ?exible organic
the invention comprises a relatively rigid backing member
plastic bags such as are made of polyethylene having a 10 11 of cardboard or similar material on which a plurality
thickness of less than 3 or 4 mils.
of flexible bags 12 are positioned. Each bag is made of
Thin ?exible plastic bags are now being used extensive
thin ?exible organic plastic material such as polyethylene
ly for packaging various products such as bakery goods,
having a thickness on the order of less than 3 to 4 mils.
soft goods and other products. An inherent problem in
As shown in FIG. 2, each bag 12 includes a pair of
the handling of such bags is that they are very thin and 15 Walls 13, 14 which are joined along three sides. Wall 14
smooth so that when handled they tend to slip relative to
is longer than wall 13 thereby providing a lip 15 along
one another. This makes them extremely di?icult to
the fourth side of wall 14. Each lip 15 is provided with
handle.
'
a pair of spaced openings 16 which are aligned with open—
In one bagging and ?lling machine for handling such '
ings 17 in the backing member 11. A rivet, nail or pin 18
bags now being used, a pile of bags are placed on a sup
extends through each set of aligned openings 16, 17, The
port. Each bag includes a lip and the support yieldingly
urges the pile of bags upwardly causing the lips to engage
pin 18 is formed with a head 19 that engages the under
side of the backing member 11. A cap member 20 fric
tionally engages the free end of the pin 18 to hold the bag
12 on the backing member. Cap member 20 may be made
By pulling the bag away from the stop member, the 25 of sheet metal and includes ?ngers 29:: which frictional
next bag is brought into position so that the air can open
ly engage pins 13.
it up. The thinness and the tendency of the bags to slip
Each bag is formed, in addition, with a slit 21 which ex
make it very di?icult to load such machines. In addition,
tends from a point adjacent opening 16 to the free edge
more than one bag is often pulled oif when the topmost
22 of the lip 15. In this manner, only a small portion
a stop member. Air is introduced to the topmost bag to
open the bag and then the product is inserted in the bag.
bag is ?lled with the product.
30 23 of the lip holds the bag on pin 18.
i .
At the present time, it is customary to make a package
of a small number of the bags at the place of manufacture
'
Referring to FIGS. 6, 7 and 8,.package 10 is adapted
to be positioned on a support 24 that is pivoted at 25
to housing 26 of a bagging and ?lling machine. Support
which is taped. Such a package is di?icult to assemble
24 is yieldingly urged upwardly by a spring 27. Support
because of the tendency of the bags to slip relative to 35 24 urges the package 10 upwardly against a stop member
one another. In addition, this package must be carefully
28 that is adjustably mounted on the machine by screws 29
handled during shipment and use at the machine because
that extend through slots 30 in the slot member. Stop
of the tendency of the bags to slip relative to one another.
member 28 is provided with a downwardly extending lip
‘It is an object of this invention to provide a novel means
31 that is formed with a pair of openings 32. Caps 20
of the bags by interposing the bags‘ between cardboard
for handling'thin ?exible plastic bags.
~ 4.0 on pins 18 are conical in external shape as at 32 vand are
It is a further object of the'invention to provide a novel
so dimensioned that they extend into the openings 32 to
package which obviates the extreme care that has been
locate the package 10‘ relative to the machine.
'
heretofore necessary in the handling of such bags during
manufacture, shipment and ?lling.
‘ ‘
Basically, the invention comprises providing a package
in the machine comprising a plurality of plastic bags hav
ing pairs of aligned holes in the lips thereof and pin mem
bers extending through and slidably received in the open
ings. A stop member on the bagging and‘ ?lling machine
By this arrangement, the backing member 11 and bags
12 are yieldingly urged upwardly against the caps 20 and
the stop member 28. Support member 24 is provided with
elongated slots 33 so that the pins 18 clear the support
member and move freely relative thereto (FIGS. 4, 6-8).
Slots 33 provide clearance for pins 18 both during inser—
tion of the package 10 in the machine and while the'pack
'
'
is adapted to locate and engage the upper ends of the pin 50 age 10 is held in the machine.
members while a support in the machine, having clear
As shown in FIG. 6, the topmost bag 12 is adapted to
ance for the lower ends of the pin members, is yieldingly
‘be opened by air from nozzle 34 so that the product, such
urged upwardly to hold the pile of bags against the stop
member. The uppermost bag is thus in position for open
ing by the air. When the bag is ?lled, it is pulled off of
the package tearing along the pin members. The lip of
as a loaf of bread B, can be inserted in the bag. By mov
ing the bag to the left, as shown in FIG. 6, it is removed
each ‘bag is preferably formed with a weakened portion
between the openings and the free edge of the lip to facili
from the package 10 by tearing the portions 23. This
brings the next successive bag into position for the' air‘
from nozzle 34 to open it so that it is ready vfor ?lling.
'The distance between holes 16 is controlled to determine
tate the tearing of the lip.
the degree of ballooning of each bag.
>
'
‘ \
In the drawings:
Where the bags are provided with a square bottom, the
60
FIG.‘ 1 is a perspective view of the package embody
package 12' assumes the general con?guration shown in
ing the invention.
FIG. 9, the square bottoms 40 forming a thicker package
FIG. 2 is a fragmentary plan view of a bag utilized in
the package of FIG. 1.
_
‘
at the unattached ends of the bags.
'
After the bag containing the product is removed from
FIG. 3 is a fragmentary sectional view on an enlarged 65 the machine, the open end of the bag is closed by a suit
scale taken along the line 3-3 in FIG. 1.
able means as by heat sealing to form the package shown
in FIG. 5.
'
FIG. 4 is a partly diagrammatic representation show
ing the manner in which the package is used in a machine.
'It can thus be seen that there has been provided a
FIG. 5 is a perspective view of a sealed bag after the
novel means for handling ?exible thin plastic bags that >
product is inserted in the bag.
70 are made of polyethylene and the like and a novel package .
FIG; 6 is a partly diagrammatic view showing the
for said bags. Since the package holds the bags ?rmly,
package in position on a machine.
no special care need be exercised between the point of
3,044,233
3
in manufacture and the point of use oft‘he bags. ‘Thus, a~
major problem in the handling of thin ?exible bags is en
said bags ‘and said ‘backing member, a stop member on
said machine, said stop member having aligning means
adapted to engage the upper enlarged ends of said pin
tirely eliminated. As many as one thousand bags can
be handled in a single package. ,
I claim:
4
being enlarged, said members being movable relative to
members, and a support member on said machine posi
,
1. In a bagging and ?lling machine wherein air is sup
plied to the uppermost of a pile of ?exible plastic bags,
tioned beneath said backing member and adapted to yield
ingly urge said backing member and said bags upwardly
relative to said pin members against the upper enlarged
the combination comprising a package of flexible organic
plastic bags, each said bag comprising two contiguous
ends of said pin members and, in turn, urge the upper en
Walls when the bag is in folded condition, one of said
walls extending beyond the other to form a lip, said lip
larged ends of said pin members against said stop mem
her, said support member having portions thereof cut
having a pair of spaced openings therethrough, said bags
being positioned with said openings in alignment, pin
away to clear said pin members.
means extending through said openings and slidable rela
enlarged upper ends of said pin members comprise up
7
8. The combination set forth in claim 7 wherein the
' tive thereto, said. pin means having enlarged upper and 15 wardly extending conical heads, said aligning means on
lower ends, .a support on said machine yieldingly urging
said stop member comprising openings therethrough
said plurality of bags upwardly, and means on said ma
chine ‘adapted to engage the upper ends of said pin means
and locate said pin means, said support also engaging said
through which said conical heads partially extend to locate
said pin members relative to said stop member.
9. The combination set forth in claim 7 wherein each
bags and yieldingly urging said bags upwardly against
i said bag is provided with a slit from a point spaced from
said enlarged upper ends of said pin means whereby the
topmost bag of said package is adapted to be opened so
that it can be ?lled and pulled from said package, said
the opening thereof in each said lip to the free edge of
said lip thereby weakening said lip in the area between
said opening and the free edge. of said lip.
10. In a bagging and ?lling machine wherein air is sup
plied to the uppermost of apile of ?exible plastic bags,
the combination comprising a package of ?exible organic
lip being torn by said pin means when the bag is pulled
from said package.
'
2. The combination set forth in claim 1 wherein each
said bag-includes a weakened portion extending between
each said opening and the free edge of said lip.
plastic bags, each said bag comprising two contiguous
3. The combination set forth in claim 1 wherein the
enlarged upper end on each said pin means comprises an
enlarged head engaging said means on said machine and
7 including openings therein through which said enlarged
being positioned with said openings in alignment, pin
walls when the bag is in folded condition, one of said
Walls extending beyond the other to form a lip, said lip
having a pair of spaced openings therethrough, said bags
means extending through said openings and slidable rela
heads partially extend to locate said package.
,
tive thereto, said pin means having enlarged lower ends,
a support on said machine yieldingly urging said plurality
4. In a bagging and ?lling machine, the combination
comprising a package of thin ?exible organic plastic bags, 35 of bags upwardly, and means on said machine adapted
each said bag comprising opposed walls which are in
to engage the upper ends of said pin means and locate
said pin means, said means also engaging said bags to
contact when the bag is folded, one of said walls extend
ing beyond the other to form a lip, each said lip having
serve as a stop against which said pin means are yieldingly
an opening, a backing member on which said bags are
urged by said support whereby the topmost bag of said
piled, said backing member having an opening, the open 40 package is adapted to be opened so that it can be filled
ing of .said backing member being aligned with the open
and pulled from said packag, said lip being torn by said
ings in the lips of saidvbagaa pin member extending
pin means when the bag is pulled from said package.
through said openings, the end of said pin member being
11. In a bagging and ?lling machine of ‘the type having
a support on which a pile of ?exible organic plastic bags
enlarged, said member being movable relative to said
is supported and a stop member against which the bags
bags and said backing member, a stop member on said
are yieldingly urged upwardly by the support ‘and air is
machine, said stop member having aligning means adapted
supplied to open the uppermost bag, the improvement
to engage the upper enlarged end of said pin member, and
comprising a package of ?exible organic plastic bags, each
a support member on said machine positioned beneath
said bag comprising two contiguous walls when the bag
said backing member and adapted to yieldingly urge said
backing member and said bags upwardly against said stop
is in folded condition, one of the walls extending beyond
the other to ‘form a lip, said lip having a pair of spaced
member and relative to said pin member, said support
openings therethrough, said bags being positioned with
member having portions thereof cut away to clear said pin
said openings in alignment, a backing member on which
7 member.
5. The combination 'set forth in claim 4 wherein the
said bags ‘are piled, said backing member having openings
enlarged upper end of said pin member comprises an
upwardly extending conical head, said aligning means on
said stop member comprising an opening therethrough
in alignment with the openings in said bags, pin means
extending through said aligned sets of openings and slid
vable relative thereto, each said pin means having enlarged
upper and lower ends, the upper ends-being shaped in such
through which said conical head partially extends to
,locate said pin member relative to said stop member.
6. The combination set forth in claim 4 wherein each
said bag is provided with a slit from a point spaced'from
the opening thereof in each said lip to the free edge of
said lip thereby weakening said lip in the area between
said opening and the free edge of said lip.
.
7. In a bagging and ?lling machine, the combination
a manner that they are engaged and located by the stop
member of the machine.
12. The invention set forth in claim 11 wherein the
enlarged upper ends of said pin means are substantially
conical in shape for engagement with openings in said
stop member.
7
13. In abagging ‘and ?lling machine wherein air is sup
plied to the uppermost of a pile of ?exible plastic bags in
a package of ?exible organic plastic bags, each said bag
comprising two contiguous walls when the bag is in folded
condition, one of said walls extending beyond the other
70 to form a lip, said lip having a pair of spaced openings
comprising a package of thin ?exible organic plastic bags,
each said bag comprising opposed walls which are in
contact when thebag is folded, one of said walls extend
ing beyond the other to form a lip, each said lip having
a pair of spaced openings therein, a backing member on
which said bags are piled, said backing member having
a pair of spaced openings, the openings of said backing
member being aligned with the openings in the lips of
said bags, a pin member extending through each of said
aligned sets of openings, ‘the ends of said pin members 75
therethrough, said bags being positioned with said open
ings in alignment, pin means extending through said open
ings and slidable relative thereto, said pin means having
enlarged upper and lower ends, the combination com
prising a support on said machine yieldingly urging said
3,044,233 -
5
plurality of bags upwardly, and stop means on said ma
chine engaging the upper ends of said pin means and locat~
ing said pin means, said support engaging said bags and '
yieldingly urging the upper ends of said pin means against
6 ,
‘to form a lip, said lip having a pair of spaced openings
therethrough, said bags being positioned with said open
ings in alignment, pin means extending through said open
ings and slidable relative thereto, said pin means having
said stop means whereby the topmost bag of said package 5 enlarged upper and lower ends, means yieldingly urging
is adapted ‘to be opened so that it can be ?lled and pulled
said package of bags upwardly, the improvement com
from said package.
prising stop means mounted onsaid machine against
14. The combination set forth in claim 13 wherein said \ which the package of bags is urged upwardly, said stop
stop means includes openings therein through which said
means having portions thereof engaging and locating the
enlarged upper ends are adapted to partially extend and 10 upper ends of said pin means.
locate the package
15. The combination set forth in claim 13 wherein said
support member has portions thereof cut away to clear
the enlarged lower ends of said pin means.
16. In a bagging and ?lling machine wherein air is sup 15
plied to the uppermost of a pile of ?exible plastic bags in
a package of ?exible organic plastic bags, each said bag
comprising two contiguous walls when the 'bag is in folded
condition, one of said walls extending beyond the other
Re?erences Cited in the ?le‘ of this patent
UNITED STATES PATENTS
1,781,782
Kemp __________ _‘_....___ Nov. 18, 1930
~ 2,704,599
Tuttle _______________ __ Mar. 22, 1955
2,962,157
Meister _____________ __ Nov. 29, 1960
>
619,815,
FOREIGN PATENTS
Great Britain _________ .._ Mar. 15, 1949
UNITED STATES PATENT OFFICE
CERTIFICATE OF CORRECTION
Patent No. 3,044 , 233
July 17, 1962
Frank Altman, Jr.
_ It is hereby certified that error appears in the above numbered pet
ent requiring correction and that the said Letters Patent should read as
corrected below.
In the drawingsI Sheet lI in Fig. 2, the longer wall,
described in column 2, lines 14-16l should be identified by
numeral
with its lead line extending to the wall provided
with lip 15.
Signed and sealed this 8th day of January 1963.
IEAL)
ttest:
RNEST w. SWIDER
DAVID L- LADD
nesting Officer
Commissioner of Patents